title: The visible portion of anterior teeth at rest.
mesh_terms: D000328:Adult; D000367:Age Factors; D000704:Analysis of Variance; D003481:Cuspid / Q000033:anatomy & histology*; D004955:Esthetics, Dental; D005006:Ethnicity; D005152:Facial Muscles / Q000502:physiology; D005260:Female; D006801:Humans; D007180:Incisor / Q000033:anatomy & histology*; D008046:Lip / Q000033:anatomy & histology; D008297:Male; D008437:Maxilla; D009811:Odontometry; D012737:Sex Factors; D019228:Tooth Crown / Q000033:anatomy & histology*; D014716:Vertical Dimension